Invention Grant
- Patent Title: Control algorithm for electronic expansion valve modulation
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Application No.: US13091705Application Date: 2011-04-21
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Publication No.: US10254026B2Publication Date: 2019-04-09
- Inventor: Tejendra Patel , Jeffrey Ernst , Bruce R. Schroder , Robert M. DeRoy , Kokjovi Coussey
- Applicant: Tejendra Patel , Jeffrey Ernst , Bruce R. Schroder , Robert M. DeRoy , Kokjovi Coussey
- Applicant Address: US CT Windsor Locks
- Assignee: Hamilton Sundstrand Corporation
- Current Assignee: Hamilton Sundstrand Corporation
- Current Assignee Address: US CT Windsor Locks
- Agency: Kinney & Lange, P.A.
- Main IPC: F25B41/06
- IPC: F25B41/06

Abstract:
An electronic expansion valve (EEV) is employed in refrigeration systems to regulate the flow of refrigerant through an evaporator. The position of the EEV is controlled through a first control loop that generates a first position signal based on superheat feedback associated with the refrigeration system, and a second control loop that generates a second position signal based on pressure feedback associated with the refrigeration system. The larger of the first position signal and the second position signal is selected to control the position of the EEV value, and the selected position signal is provided in feedback to both the first control loop and the second control loop.
Public/Granted literature
- US20120266623A1 CONTROL ALGORITHM FOR ELECTRONIC EXPANSION VALVE MODULATION Public/Granted day:2012-10-25
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